when you do the smog. make sure you have the paper work in hand that says its carb legal along with the sticker on the parts. cali is getting strick now with the new smog II. plus it depends on who you know.
my boy just sold his gsr with the greddy turbo and had a hard time getting smog so he took out the turbo kit and went back to stock to get somg to sell the car, and re-installed it later for the guy.